Improvement in machines for joining irregular seams in india-rubber work



ata-a sala @anni ditta.

CHARLES A. ENSIGN, CF NAUGATUCK, CONNECTICUT.

Letters Patent No. 109,726, daad November 29, 1870,

IMPROVEMENT IN MACHINE'S FOR JOlNING IRREGULAR SEAMS IN INDIA-RUBBER WORK.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, CHARLES A. Ersten, of Naugatuck, in the county of New Haven and State of Connecticut, have ,invented a new improvement in Machine for Joining Irregular Seams in India-ruhber Work; and I do hereby declare the following, when taken in connection 'with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same,

and which said drawing constitutes part of this specication, and represents in- Figure 1 a side View; Figure 2, a front view;

Figure 3, -a vert-ical section;

Figure 4, a sectional view, enlarged to illustrate the operation; and in Figure 5, a top View.

This invention relates to an improvement in a dcvice for joining sea-ms in India-rubber work, with special reference to the heel-seam of over-shoes, but applicable to other seams; and

The invention consists in a folding device, which7 receiving a. strip of gummed fabric after it has been cut, doubles the gummed material into the required form, and presents it to one part of the material'to be joined, then the other part placed thereon, the

twp parts are pressed onto the gummed strip, and.

the folder withdrawn, leavingvthe two parts secured together by the said gummed strip.

A is the bed of the machine, upon which the machineis arranged.

B is a roll of fabric, gummed, such as is used for joining the seams of India-rubber goods.

C C are the feeding-rolls, between which the said fabric passes, as-seen in iig. 3, operated to supply the requisite quantity of material/hy a cam, D, through a lever, E, and may be adjusted to give a greater or -lesser amount of gurnmed material.

F is a cutter, /xed to a vertically-sliding carriage, G, arranged in suitable guides, aud operated by a crank, g, attached to the slide by a pit-man, H. @See figs. 2.and 3.)

I is a fixed cutter, o ver which the fabric passes, as seen in'g. 3, and sb that, as the cutter F descends to the position denoted in iig. 4, the fabric will be cut by the movable knife passing the fixed cutter.

L is a blade, of thin material, xed to a shaft, L', and over wliolra felder, N,worls, close upon opposite sides, and the said folder, when in vertical position, as secn in gs. 2 and 3, is operated hy connection with the carriage G, so that when the carriage rises the folder N also rises, and passes up through a slotted bar, I?, as seen in Iig. 3, so that the fabric Vpasses between the said slotted bar and the folder N.

The cutter F is fixed to the carriage a little below the folder N, as seen in iig. 2, so that thecnt has been made before the folder N will have reached the bar Pfleaving the strip on the har P. The carriage and folder N still descending, the strip cut 'is drawn down and'doubled over the plate L, the gummed side out.

One part of the shoe,'cutto the required form, is placed upon the bed ct, k(see figs. 4 and 5,) then the plate L is turned down onto the bed aas seen in fig. 4, by means of the lever R, fixed to the shaft L, then the other part, which is to be secured to the lfirst, is laid upon the upper side of the plate L, the edgesof the two parts corresponding, then a presser, l1, arranged upon a shaft, S, is, by means of a lever, T, turned down onto the'last-placed part, as denoted in broken lines, fig. 4, and in this operation the folder N isforccd hack by the slides W, actuated by the cam W striking thc'projcctions on the lower partof the folder N,

as socn'in ligs. 4 and 5, carrying the folderrN entirely olf from the gummed material, leaving the gumrned surfaceonly in Contact with the two parts which are to h e secured together. These pressed onto the gurnlncd strip are then taken with the gummed strip from the.

pla-te L, and the said plate returned for a 'second strip and second operation. y

' The upper edge of the plate should conform to the shape oftheseam required toy be made, here represented, as before mentioned, the heel-seam of' an overshoe.

For other irregular seams those skilled in thc mimufacture of India-rubber work will readily devise the requisite form. v

The machine is operated by a crank,-X, or by any other suitable device.

I claim as my invention- 1. In combination with the fixed and stationary cutters F and I, the plate L and folder N arranged so as to receive the strip of fabric, cut and double the said strip over the plate L, substantially'as set forth.

2. In combination with tlre plate L and folder N, operating as described, the bed a and presser b, when arranged so that the strip folded upon the said plate may, by the turning of the plate, be laid upon the said bed, substantially as set forth.

3.y In combination with the plate L, folder N, bed c, and presser i), the arrangement of the slides W, operating to move the folder away from the said strip when laid upon the said bed, substantially as set forth.

CHAS. A. ENSIGN.

Witnesses ETHEL C. HINE, J. B. YALE. 

